Special Use Clamps
Pull-Down Clamp, Eccentric
Pull-Down Clamp, Eccentric 5-sided machining can be carried out safely without clamp interference. Workpiece can be loaded and unloaded by handling equipment. Optional oil supply through G 1/8 port or manifold connection. Disk spring for staged pull-down effect. Body, sleeves and draw bar are made of nitride-hardened alloy steel for longer trouble-free life. Clamping sleeves are segmented and serrated to form and grip the clamping hole. These Pull-Down Clamps also serve as a support surface and "Z" locator for the workpiece.
30
Ø4 Oil Supply
Ø56
28±0.2
Ø8 +0.015 5 Centering Hole
28±0.01
E-8
14±0.02
ØF
Specifications
ØE
D
Radial Force of Sleeve Segments (kN)
G1/8
Workpiece Hole Depth (H)
Permissible Horizontal Force (kN)
Vertical Clamp Force (kN)
Workpiece Hole Dia. (G)
Piston Dia. (mm)
Model No.
C
A
Single Acting (S/A) Cylinders, actuated hydraulically 1 direction, spring returned.
51.5
41-5721-07 41-5721-08 41-5721-09 41-5721-10 41-5721-11 41-5721-12 41-5721-13 41-5721-14
6.8 - 7.7 7.8 - 8.7 8.8 - 9.7 9.8 - 10.7 10.8 - 11.7 11.8 - 12.7 12.8 - 13.7 13.8 - 14.7 Allowable Side Load (unclamp) (N)
3.5
1
10
18
10
5.3
1.5
15
22
10
ØB
8.5
2.5
25
28
13
Ø9 thru 3X 120° For M8 Cap screws (Included)
11.5
3.5
35
32
13
Clamping Rim Hgt.
Lateral Comp./ Clamp (mm)
Model No.
Sleeve Expansion
Volume (cm 3 )
Weight (g)
Min. (mm)
Single Acting (S/A) Cylinders, actuated hydraulically 1 direction, spring returned.
CLAMPING HOLE IN WORKPIECE
41-5721-07 41-5721-08 41-5721-09 41-5721-10 41-5721-11 41-5721-12 41-5721-13 41-5721-14
+/- 0.25
6
1.4
1.0
50
2600
2600 2800
+/- 0.25
7
1.4
1.5
80
H
+/- 0.25
8
1.4
2.5
120
2800
G
+/- 0.25
9
1.4
3.2
150
2900
Fixture hole pattern for oil supply and centering.
30
Dimensions
28 0.2
Ø4 Oil Supply
Model No.
C +/-0.01
56
A B F Single Acting (S/A) Cylinders, actuated hydraulically 1 direction, spring returned. 41-5721-07 59 80 75 9.5 6.6 24 41-5721-08 7.5 41-5721-09 59 80 75 9.5 8.5 24 41-5721-10 9.5 41-5721-11 59 80 75 12 10.5 24 41-5721-12 11.5 41-5721-13 59 80 75 12 12.5 24 41-5721-14 13.5 D E
3x M8
120°
Ø8+0.02 10mm deep
28±0.01
14±0.02
For manifold mounting, remove the M5 screw and sealing washer and insert the o-ring (included).
ILMV415712 REV C
Maximum operating pressure 150 bar (15 MPa) Minimum operating pressure 30 bar (3 MPa)
For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 µm R a
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